There is no "material" that does not allow a powerful enough current to conduct through it. However, a vacuum (which contains absolutely nothing, and is not technically a material) will never conduct a current, no matter the power.
well, i was always told in my chem class the the best insulator is air. all the insulation we use to keep things warm usually involve trapping air. so i would probably go with air as the simplest answer.
most materials allow heat to pass by it easily but belive it or not bread will stop heat compleatly but willl also get semi warm.
insulator
Which term describes matter that does not allow any light to transmit through?
OPAQUE
Thermal insulators do not transfer heat easily, a notable example is polystyrene that is why is used to make coffee cups.
a thermal insulator, such as air .
by bum cheecks
thermal insilators
An insulator
Bad conductor or insulator.
mettel
ThermalsXD
A thermal conductor.
Conduction
Heat is a transfer of thermal energy.
mettel
mettel
Metals
ThermalsXD
Any material which has high thermal conductivity can easily transfer energy as heat. As far as I know, all metals have high thermal conductivity. Copper, gold and silver especially have high thermal conductivity. Diamond and graphene have VERY high thermal conductivity, so this is not restricted to only metals.
conduction
Thermal Conduction
A thermal conductor.
Conduction
Heat is a transfer of thermal energy.
An insulator is a material that does not allow a transfer of electricity or heat energy. Materials that are poor thermal conductors can also be described as being good thermal insulators. Feather, fur, and natural fibers are all examples of natural insulators
one energy that thermal energy can transfer into is radiation energy. It can transfer into that because of the electromagnetic waves.